The card given to access the elevator was not working. We had to look for security to assist us, but Saroth was very quick to respond to my messages and came 15-20 mins after we got there to give us a working key. Honest mistake.
Besides that, the apartment was very clean and comfortable. It's in a perfect place to explore the city. There is the W Market/district about 8 minutes walk, which was really cool for some food and drinks. It's about 40 minutes from the BKK airport and cost around 400 baht. Thanks Saroth!